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TI-2023-05543 Aliases CVE-2023-6017GHSA-pwcm-766j-45vc

H2O S3 Bucket Takeover

Priority LOW 33CWE-840Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

H2O included a reference to an S3 bucket that no longer existed allowing an attacker to take over the S3 bucket URL.

Why it matters now

EPSS 0.00855 58th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
h2oaih2oai/h2o-3up to latest—No fix listedCNA
  • h2oai/h2o-3 Vendorh2oai Affected up to latest Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:h2o:h2o:-:*:*:*:*:*:*:*not specified by NVDVulnerableh2oai
  • cpe:2.3:a:h2o:h2o:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·h2oai

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-6017
  2. 2026-10-03 Alias added: GHSA-pwcm-766j-45vc

References

Exploit 1

  • TI-2025-05944 Deserialization Vulnerability in h2oai/h2o-3 CVSS 3.0CRITICAL 9.8
  • TI-2024-09776 Jdbc Deserialization in h2oai/h2o-3 CVSS 3.0CRITICAL 9.8
  • TI-2024-30727 H2O.ai H2O through 3.46.0.4 allows attackers to arbitrarily set the JDBC URL, leading to… CVSS 3.1CRITICAL 9.1
  • TI-2026-03424 Remote Code Execution in h2oai/h2o-3 CVSS 3.1CRITICAL 9.8
  • TI-2024-07992 Arbitrary File Overwrite in h2oai/h2o-3 CVSS 3.0HIGH 8.2
  • TI-2023-06020 External Control of File Name or Path in h2oai/h2o-3 CVSS 3.1HIGH 8.2
See all 29 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences